Silver Bullet spacer for exact engine and intake requirements
The aFe 46-33002 is the documented 5.4L Ford/Lincoln spacer. Its one-gasket, 70 mm-bolt installation differs from the earlier two-gasket spacer and should not be substituted by engine displacement alone.
Key Features
- 6061-T6 billet-aluminum serrated/helix entry design; claimed turbulence and reduced whistle do not guarantee an improvement on every setup.
- Exact manual lists lock washers without an additional flat-washer set; do not borrow another spacer’s contents.
- The existing airbox, EVAP hose, MAF connection and snorkel are reinstalled; no replacement filter or coupling is listed.
Fitment
| Years / source scope | Model | Exact requirements |
|---|---|---|
| 2004–2010 exact manual | Ford F-150 | V8 5.4L |
| 2004–2009 exact manual | Ford Expedition | V8 5.4L; current page groups the family through 2010 |
| 2004–2007 exact manual | Ford F-250 / F-350 Super Duty | V8 5.4L; later current family headline is not individual mechanical proof |
| 2006–2008 exact page / manual | Lincoln Mark LT | V8 5.4L |
46-33002: The current headline groups F-150/F-250/F-350/Expedition under 2004–2010, but the linked exact manual ends Expedition in 2009 and Super Duty in 2007. Existing narrower rows are retained; the family headline is not used to extend every model. Individual grades, Expedition EL/body configurations and actual engine/assembly remain conditional, not complete configuration certification.
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | 46-33002 |
| Material / design | 6061-T6 billet aluminum; serrated/helix entry |
| Engine / application | See exact engine-specific fitment table and source qualifications |
| Sealing arrangement | One supplied gasket between spacer and throttle body; AIR IN faces the body. |
| Throttle-body fastening | Throttle-body bolts: 10 Nm (89 in-lb). Do not apply that value automatically to the airbox or other mounting hardware. |
| Emissions scope | The page references D-550-11 and D-550-17 with an application-specific disclaimer. The manual’s general exemption note does not certify every year under the broader current family headline; confirm the applicable EO row. |
What's Included
- One Silver Bullet spacer and one gasket
- Four 6 mm × 70 mm bolts and four 6 mm lock washers
About aFe Power
aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.
Related Parts
- Browse aFe Power by exact engine and installed intake; shared brand membership does not establish compatibility.
- Use the exact spacer, seal and fastener list; do not substitute another spacer from a broad model title.
Frequently Asked Questions
What is the 46-33002?A model- and engine-specific Silver Bullet throttle-body spacer, not a complete intake or replacement throttle body.
Does it include a filter or coupling?The exact parts list below governs. Generic manufacturer page fields do not establish a supplied intake filter or coupling for this spacer.
Are gains guaranteed?No. Turbulence, throttle-response and whistle statements are manufacturer design claims, not guaranteed horsepower, fuel-economy or sound results for the actual engine.
Which sealing parts are used?One supplied gasket between spacer and throttle body; AIR IN faces the body.
What is the correct torque?Throttle-body bolts: 10 Nm (89 in-lb). Do not apply that value automatically to the airbox or other mounting hardware.
Are all original search rows certified?The current headline groups F-150/F-250/F-350/Expedition under 2004–2010, but the linked exact manual ends Expedition in 2009 and Super Duty in 2007. Existing narrower rows are retained; the family headline is not used to extend every model. Individual grades, Expedition EL/body configurations and actual engine/assembly remain conditional, not complete configuration certification.
Can another spacer’s instructions be substituted?No. Gaskets, O-rings, brackets, screw sizes, control cables and intake restrictions differ by exact part number.
Does the EO reference cover every application?The page references D-550-11 and D-550-17 with an application-specific disclaimer. The manual’s general exemption note does not certify every year under the broader current family headline; confirm the applicable EO row.
Installation Instructions
- Read the exact manufacturer instructions for 46-33002, verify the actual engine, intake, hardware and applicable emissions scope before removal.
- Disconnect the evaporative vent hose and MAF harness at the airbox. Loosen its four bolts and remove the airbox.
- Remove the throttle-body bolts. Install the spacer with AIR IN facing the throttle body and place the supplied gasket between spacer and throttle body.
- Secure the body with the supplied longer bolts and lock washers. Tighten to 10 Nm (89 in-lb).
- Reinstall the airbox, reconnect its EVAP hose and MAF harness, and reinstall the inlet snorkel to airbox and fender. Inspect every connection.
- Verify the actual vehicle’s EO coverage before applying the required emissions label on or near the device as instructed.
46-33002: installation details and any unresolved source scope must be matched to the actual vehicle before use.
California Proposition 65 Warning
California Proposition 65 warning: this product can expose you to chemicals known to the State of California to cause cancer and reproductive harm.
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